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    <!-- 1.配合响应式的栅格系统 -->
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    <!-- 2.自定义内容 -->
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                       <h3>太极张三丰</h3>
                       <p>这是一个图片结合文字的缩略图</p>
                       <p>
                           <a href="#" class="btn btn-primary">观看</a>
                           <a href="#" class="btn btn-warning">购买</a>
                       </p>
                    </div>
                </div>
            </div>
            <!-- 其余三张图片 -->
            <div class="col-lg-3 col-md-4 col-sm-6">
                <div class="thumbnail">
                    <img src="img/2.jpg">
                    <div class="caption">
                       <h3>速度与激情7</h3>
                       <p>这是一个图片结合文字的缩略图</p>
                       <p>
                           <a href="#" class="btn btn-primary">观看</a>
                           <a href="#" class="btn btn-warning">购买</a>
                       </p>
                    </div>
                </div>
            </div>
            <div class="col-lg-3 col-md-4 col-sm-6">
                <div class="thumbnail">
                    <img src="img/2.jpg">
                    <div class="caption">
                       <h3>速度与激情9</h3>
                       <p>这是一个图片结合文字的缩略图</p>
                       <p>
                           <a href="#" class="btn btn-primary">观看</a>
                           <a href="#" class="btn btn-warning">购买</a>
                       </p>
                    </div>
                </div>
            </div>
            <div class="col-lg-3 col-md-4 col-sm-6">
                <div class="thumbnail">
                    <img src="img/2.jpg">
                    <div class="caption">
                       <h3>速度与激情8</h3>
                       <p>这是一个图片结合文字的缩略图</p>
                       <p>
                           <a href="#" class="btn btn-primary">观看</a>
                           <a href="#" class="btn btn-warning">购买</a>
                       </p>
                    </div>
                </div>
            </div>
        </div>
    </div>
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